Dermatologists break down the most common circular rashes that aren’t ringworm, including hives, lupus, and atopic dermatitis ...

Hives are similar to a medication rash ... due to compromised blood flow in the blood vessels. This produces a net-like pattern of red–blue or purplish weblike lines. However, it may appear ...

They may look like hives or somewhat round bull’s-eye targets. The center of the lesions is typically darker with lighter edges. In erythema multiforme minor, lesions are often circular and less ...